The allied forces repelled the terrorists’ attack, setting off explosive devices as well as striking their gathering points, according to the sources.

The clashes lasted for eight hours and caused the death of at least 20 of the Nusra terrorists and the injury of 30 others.

The allied forces have been since July 4 engaged in the battle of Zabadani, the last city under the control of terrorists in the Qalamoun region on the Lebanese border.

The ongoing battle is part of a wider operation launched by the Syrian forces and the resistance movement’s fighters on May 4, which has reportedly driven militants out of more than 90 percent of the territory in the mountainous region.